# Copyright(C) 2010-2011 Christophe Benz, Romain Bignon, John Obbele, Nicolas Duhamel
#
# This file is part of woob.
#
# woob is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# woob is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with woob. If not, see <http://www.gnu.org/licenses/>.

from io import BytesIO
import os
from shutil import which
import subprocess
from urllib.parse import urlparse

import requests

from woob.capabilities.video import CapVideo, BaseVideo
from woob.capabilities.base import empty
from woob.tools.application.repl import ReplApplication, defaultcount
from woob.tools.application.media_player import InvalidMediaPlayer, MediaPlayer, MediaPlayerNotFound
from woob.tools.application.formatters.iformatter import PrettyFormatter

from .image2xterm import image2xterm, get_term_size

__all__ = ['AppVideo']


class VideoListFormatter(PrettyFormatter):
    MANDATORY_FIELDS = ('id', 'title', 'duration', 'date')
    DISPLAYED_FIELDS = ('author', 'rating', 'thumbnail', 'rating_max')

    def get_title(self, obj):
        return obj.title

    def get_description(self, obj):
        if empty(obj.duration) and empty(obj.date):
            return None

        result = '%s' % (obj.duration or obj.date)
        if hasattr(obj, 'author') and not empty(obj.author):
            result += ' - %s' % obj.author
        if hasattr(obj, 'rating') and not empty(obj.rating):
            result += ' (%s/%s)' % (obj.rating, obj.rating_max)
        if hasattr(obj, 'thumbnail') and not empty(obj.thumbnail) and not empty(obj.thumbnail.data):
            result += '\n'
            result += image2xterm(BytesIO(obj.thumbnail.data), newsize=get_term_size())

        return result


class AppVideo(ReplApplication):
    APPNAME = 'video'
    VERSION = '3.6'
    COPYRIGHT = 'Copyright(C) 2010-YEAR Christophe Benz, Romain Bignon, John Obbele'
    DESCRIPTION = "Console application allowing to search for videos on various websites, " \
                  "play and download them and get information."
    SHORT_DESCRIPTION = "search and play videos"
    CAPS = CapVideo
    EXTRA_FORMATTERS = {'video_list': VideoListFormatter}
    COMMANDS_FORMATTERS = {'search': 'video_list',
                           'ls': 'video_list',
                           'playlist': 'video_list'}
    COLLECTION_OBJECTS = (BaseVideo, )
    PLAYLIST = []
    nsfw = True

    def __init__(self, *args, **kwargs):
        super(AppVideo, self).__init__(*args, **kwargs)
        self.player = MediaPlayer(self.logger)

    def main(self, argv):
        self.load_config()
        return super().main(argv)

    def download(self, video, dest, default=None):
        if not video.url:
            print('Error: the direct URL is not available.', file=self.stderr)
            return 4

        def check_exec(executable):
            if which(executable) is None:
                print('Please install "%s"' % executable, file=self.stderr)
                return False
            return True

        dest = self.obj_to_filename(video, dest, default)

        if video.url.startswith('rtmp'):
            if not check_exec('rtmpdump'):
                return 1
            args = ('rtmpdump', '-e', '-r', video.url, '-o', dest)
        elif video.url.startswith('mms'):
            if not check_exec('mimms'):
                return 1
            args = ('mimms', '-r', video.url, dest)
        elif 'm3u8' == video.ext:
            _dest, _ = os.path.splitext(dest)
            dest = '%s.%s' % (_dest, 'mp4')
            content = tuple()
            parsed_uri = urlparse(video.url)
            baseurl = '{uri.scheme}://{uri.netloc}'.format(uri=parsed_uri)
            for line in self.read_url(video.url):
                line = line.decode('utf-8')
                if not line.startswith('#'):
                    if not line.startswith('http'):
                        line = '%s%s' % (baseurl, line)
                    content += (line,)

            args = ('wget', '-nv',) + content + ('-O', dest)
        else:
            if check_exec('wget'):
                args = ('wget', '-c', video.url, '-O', dest)
            elif check_exec('curl'):
                args = ('curl', '-C', '-', video.url, '-o', dest)
            else:
                return 1

        self.logger.debug(' '.join(args))
        subprocess.call(args)

    def read_url(self, url):
        r = requests.get(url, stream=True, timeout=30)
        return r.iter_lines()

    def complete_download(self, text, line, *ignored):
        args = line.split(' ')
        if len(args) == 2:
            return self._complete_object()
        elif len(args) >= 3:
            return self.path_completer(args[2])

    def do_download(self, line):
        """
        download ID [FILENAME]

        Download a video

        Braces-enclosed tags are replaced with data fields. Use the 'info'
        command to see what fields are available on a given video.

        Example: download KdRRge4XYIo@youtube '{title}.{ext}'
        """
        _id, dest = self.parse_command_args(line, 2, 1)
        video = self.get_object(_id, 'get_video', ['url'])
        if not video:
            print('Video not found: %s' % _id, file=self.stderr)
            return 3

        return self.download(video, dest)

    def complete_play(self, text, line, *ignored):
        args = line.split(' ')
        if len(args) >= 2:
            return self._complete_object()

    def do_play(self, line):
        """
        play ID

        Play a video with a found player.
        """
        if not line:
            print('This command takes an argument: %s' % self.get_command_help('play', short=True), file=self.stderr)
            return 2

        ret = 0
        for _id in line.split(' '):
            video = self.get_object(_id, 'get_video', ['url'])
            error = self.play(video, _id)
            if error is not None:
                ret = error

        return ret

    def play(self, video, _id):
        if not video:
            print('Video not found: %s' % _id, file=self.stderr)
            return 3
        if not video.url:
            print('Error: the direct URL is not available.', file=self.stderr)
            return 4
        try:
            player_name = self.config.get('media_player')
            media_player_args = self.config.get('media_player_args')
            if not player_name:
                self.logger.info('You can set the media_player key to the player you prefer in the video '
                                 'configuration file.')
            self.player.play(video, player_name=player_name, player_args=media_player_args)
        except (InvalidMediaPlayer, MediaPlayerNotFound) as e:
            print('%s\nVideo URL: %s' % (e, video.url))

    def complete_info(self, text, line, *ignored):
        args = line.split(' ')
        if len(args) >= 2:
            return self._complete_object()

    def do_info(self, line):
        """
        info ID [ID2 [...]]

        Get information about a video.
        """
        if not line:
            print('This command takes an argument: %s' % self.get_command_help('info', short=True), file=self.stderr)
            return 2

        self.start_format()
        for _id in line.split(' '):
            video = self.get_object(_id, 'get_video')
            if not video:
                print('Video not found: %s' % _id, file=self.stderr)
                return 3

            self.format(video)

    def complete_playlist(self, text, line, *ignored):
        args = line.split(' ')
        if len(args) == 2:
            return ['play', 'add', 'remove', 'export', 'display', 'download']
        if len(args) >= 3:
            if args[1] in ('export', 'download'):
                return self.path_completer(args[2])
            if args[1] in ('add', 'remove'):
                return self._complete_object()

    def do_playlist(self, line):
        """
        playlist cmd [args]

        playlist add ID [ID2 ID3 ...]
        playlist remove ID [ID2 ID3 ...]
        playlist export [FILENAME]
        playlist display
        playlist download [PATH]
        playlist play
        """

        if not self.interactive:
            print('This command can be used only in interactive mode.', file=self.stderr)
            return 1

        if not line:
            print('This command takes an argument: %s' % self.get_command_help('playlist'), file=self.stderr)
            return 2

        cmd, args = self.parse_command_args(line, 2, req_n=1)
        if cmd == "add":
            _ids = args.strip().split(' ')
            for _id in _ids:
                video = self.get_object(_id, 'get_video')

                if not video:
                    print('Video not found: %s' % _id, file=self.stderr)
                    return 3

                if not video.url:
                    print('Error: the direct URL is not available.', file=self.stderr)
                    return 4

                self.PLAYLIST.append(video)
        elif cmd == "remove":
            _ids = args.strip().split(' ')
            for _id in _ids:
                video_to_remove = self.get_object(_id, 'get_video')

                if not video_to_remove:
                    print('Video not found: %s' % _id, file=self.stderr)
                    return 3

                if not video_to_remove.url:
                    print('Error: the direct URL is not available.', file=self.stderr)
                    return 4

                for video in self.PLAYLIST:
                    if video.id == video_to_remove.id:
                        self.PLAYLIST.remove(video)
                        break
        elif cmd == "export":
            filename = "playlist.m3u"
            if args:
                filename = args

            file = open(filename, 'w')
            for video in self.PLAYLIST:
                file.write('%s\r\n' % video.url)
            file.close()
        elif cmd == "display":
            for video in self.PLAYLIST:
                self.cached_format(video)
        elif cmd == "download":
            for i, video in enumerate(self.PLAYLIST):
                self.download(video, args, '%02d-{id}-{title}.{ext}' % (i+1))
        elif cmd == "play":
            for video in self.PLAYLIST:
                self.play(video, video.id)
        else:
            print('Playlist command only support "add", "remove", "display", "download" and "export" arguments.', file=self.stderr)
            return 2

    def complete_nsfw(self, text, line, begidx, endidx):
        return ['on', 'off']

    def do_nsfw(self, line):
        """
        nsfw [on | off]

        If argument is given, enable or disable the non-suitable for work behavior.

        If no argument is given, print the current behavior.
        """
        line = line.strip()
        if line:
            if line == 'on':
                self.nsfw = True
            elif line == 'off':
                self.nsfw = False
            else:
                print('Invalid argument "%s".' % line)
                return 2
        else:
            print("on" if self.nsfw else "off")

    @defaultcount()
    def do_search(self, pattern):
        """
        search PATTERN

        Search for videos matching a PATTERN.
        """
        if not pattern:
            print('This command takes an argument: %s' % self.get_command_help('search', short=True), file=self.stderr)
            return 2

        self.change_path(['search'])
        self.start_format(pattern=pattern)
        for video in self.do('search_videos', pattern=pattern, nsfw=self.nsfw):
            self.cached_format(video)
